Music-roll-feed mechanism



May 11 1926.

J. 0. FOWLER nusxc ROLL FEED uqcmmzsm Filed March 14, 1921 -2Sheeis-Sheet 2 fi I l 1| u l nl llu I- |H|l ||||n|- Q h M mm d .m \m w k....,fi..u..,...........nnflufihuan m a an MN Q fi Patented May 11,1926.

JONATHAN O. FOWLER, OF NEW YORK, N. Y., ASSIGNOR '10 GEORGE MESSIG, OF

BROOKLYN, NEW YORK.

mus'rononnrnnn MECHANISM.

Application filed March 14, 1921. Serial No. 452,206.

This invention relates to musical instruments preferably automaticallyoperated by a motor which may be energized by the closing of an electriccircuit either manually or by a coin-actuated device in the well knownmanner.

I preferably employ music-roll magazines or carriers adapted to carry aseries of music-rolls whereby, without changing the latter by hand, theinstrument may be enabled to play the selections of each roll separatelyat will, or to play the entire number of selections on all the rollsseriatim as a continuous performance.

I provide a new self-playing instrument arranged so as to permit the useof interchangeable music-rolls whereby any one of the tune sheets may bebrought into operative position, simultaneously with the advancemovement of the winding or take-up roll in order to draw the tune sheetover a tracker-board and to cause the operation of the musicinstrumentalities and then to afterward automatically rewind the tunesheet upon its roll after the tune has been played. Means are meanwhileprovided for advancing the roll carrier a step after playing andrewinding each roll, to bring another roll into playing position.

lVith the above objects, and others which will be set forth below, inview, the invention consists in novel features and elements andcombinations of the same; and a practic-able embodiment of the inventionis represented in detail in the accompanying drawings forming a part ofthe specification, and in which- Figure 1 is an elevation of aninstrument constructed according to my invention;

Figure 2 is a similar view showing some of the elements in differentpositions, the casing being omitted;

Figure 3 is a view in detail showing the music-roll rewindingmechanism;and Figure t is a front elevation of the entire devicemodified in some particulars and the operating mechanism at the right ofthe lower rolls being omitted'for clearness of illustration of the otherparts and the entire drawings being somewhat diagrammatic.

In this invention I use a music-roll carrier or magazine 9, such as isin common use, comprising a horizontal shaft and spaced heads in whichare mounted music-rolls 10 in a circular series, the said rolls havingthe ordinary means for detachable engagement with the roll carrier.

The roll carrier is revoluble but is only intermittently andautomatically driven or moved by the turning of the slotted wheel 8attached thereto at such time as the latter is driven by the pin 6 ofthe wheel 2 as explained below.

The numeral 1 denotes a continuously running shaft which may beconnected with and actuated by a' suitable source of power as anelectric motor (not shown) which latter may be started in operation byany preferred means, as for example, a manually actuated switch orcoin-controlled device such as are now in common use in instruments ofthis type for this purpose. A friction belt 5 serves to connect a pulleymounted on and driven by the shaft 1 with a wheel 2. This wheel isconstructed and arranged to rotate and at every revolution on its shaft42 to cause the roll carrier to be advanced a certain predetermineddistance so as to bring the tune sheet 11 of a. music-roll 10 inposition to be played, during which movement the said wheel may be heldin a' stationary position by means of a dog 3 controlled by a spring 3and having a short projecting part as shown in Figure 1 or being madewith a long extension 3 as in Figure 4 engaged with a notch 4 in theperiphery of the wheel 9 at which time, or locked period of the wheel,the belt 5 may slip over the said wheel without rotating the same. Afterthe tune sheet is played the dog 3 is released from the wheel 2 ashereinafter described. One end of the spring 3 may be attached to thepin 3 on the dog 3, the other end thereof being secured to the casing.

In operation, a pin 6 of the wheel 2 enters one of the radial slots 7 ofa wheel 8 attached to the shaft 9" of the roll carrier 9-there being asmany of these slots as there are music-rolls 10 in the rollcarrierwhereby the slotted wheel 8 is caused to make a partialrevolution and the said roll carrier will be thereby rotated asufficient distance to bring one of the music-rolls into operativeplaying position with respect to the transfer arms 14 carried by shaft14?, the said carrier 9 beingh-eld in its new position by suitablelocking means as a spring cont-rolled dog 12 which enters a notch 1n thesame and hold it stationary except when the wheel. 8 is being turned bythe pin 6.

A continued revolution of the wheel 2 (before it has reached its limitof movement) produces a further automatic movement of the parts andcauses its stud 13 to engage a dog 34 and to move it suffic ently (byturning the arm 14 of the shaft 14 as in Fig. 4 or by direct contact asin Figs. 1 and 2) to depress the transfer arms 14 one being mountedunder tension (by spring 14 the ends of which are respectively securedto the arm 14 and to the casing) on said shaft on each side of theinstrument the ends of which arms are superposed over the rod 11 at thefree end of a tune sheet 11 of an adjacent music-roll 10 with which thefree end of tune sheets used in instruments of this type is provided. 14segmental rack bar 15 (a side view of which is shown in Fig. 2 and anedge view thereof in Fig. 4) is attached to the spring arm 14 and by itsdescent serves to rotate a gear 16, the pulley 16 of which turns by abelt 21 the pulley 17 to which the ratchet wheel 18 is secured, the twolast named elements being fastened together but loose on the end face ofthe take-up roll 19 and held from independent movement in but onedirection by the pawl 20 carried by said roll 19. The ratchet wheel 18of the pulley 17 carries around the pawl 20 (fixed to the take-up roll19) thereby rotating the latter at the same time that the activemusic-roll coinmences to be rotated on its shaft 42 by the tune sheetrod 11 being carried down by the arm 14.

By the operation of the last named parts the take-up roll is caused tomake half a revolution, thus bringing the lower hook 22 formed in theflange 19 of the roll to its highest position (as shown in Figure 2) atthe time the rod 11 of the tune sheet has been carried downwardly sothat the tune sheet rod 11 will lie in front of and be delivered to thesaid hook, by which arrangement of elements the engaging meansas thehook 22of the takeup roll and the engaging means-as the rod 11of thetune sheet concurrently advance one toward the other, and the take-uproll 19 and the active musicroll 10 rotate or are driven simultaneouslyor in unison with an even and uniform movement.

As illustrated, during this operation the music-roll will move clockwisewhile the take-up roll moves anti-clockwise.

The said descent of the spring controlled transfer arm 14, which worksin a slot- 28 in the upper part 28 of a movable rod 24, also causes theengagement therewith of the projection 23 at the lower end of the saidslot whereby the rod 24 is caused to fall, and by the consequentoperation of the therewith connected bell crank 24 (pivoted at 24 tothrow a clutch 25 in a closed relation in respect to its gear 27 and theteeth 19 of the roll 19, whereby the continuously rotating shaft 26 willrotate the gear 27 which meshes with the toothed takeup roll and causesthe latter to continue to revolve anti-clockwise in unison with therotation of the clockwise moving active musicroll, and thus to wind thetune sheet 11 on the said take-up roll 19, thereby overlaying the rod11, the shaft 26 carrying a gear 26 and being connected by gears 26 and26 of the shaft 1 with the latter (which gear 26 moves anti-clockwise)the shaft 26 moving clockwise, the pawl 20 meanwhile slipping over theratchet teeth 18 of the pulley 1'? as it is carried around by the roll19 and the friction caused thereby and the engagement of the gear 16 andthe teeth of the segment 15 serving to hold the pulleys 16 and 17stationary and to thus prevent the transfer arm 14 from being raised byits spring 14 The tune sheet is now caused to pass across the usualtracker-board 10 and the selections of said sheet are played by theinstrumentalities of the said apparatus in the ordinary manner.

At the time when the tune sheet 11 is nearly unwound from the roll 10 aperforation 11 in the face of the tune sheet serves in the well knownmanner to operate a suitable device for rewinding the tune sheet on itsroll, as a pneumatic 10 (or an ordinary electric connection controllingmy switching mechanism) whereby suitable movable means, as the bar 40may be operated as by being moved to the left by the pneumatic, whichbar by its depending lever 41, pivoted at its lower portion, may serveto close and operate the clutch 48, 42 and operate the parts in thefollowing manner The said switching mechanism controlled by thepneumatic 10 may cause the bar 40 to be moved to the left, the saidmovement serving to push the pivoted lever 41 a sufficient distance tocause the clutch member 43 keyed to the constantly rotating shaft 44(which may be connected by a belt 44 with a pulley on the shaft 1) toengage the clutch member 42 of the stripped musicroll shaft 42 thathappens to be adjacent to and aligned with it, thereby rotating theclutch 42,

latter shaft in a direction contrary to its former movement (oranti-clockwise) and thus winding up the said tune sheet from the take-uproll 19 on its roll again, the tracker-board being now renderedinoperative in the customary manner.

At the time the bar 40 is moved to the left as described, the inclinedprojection 38 of the latter lifts up the rod 37 thereby raising the sameand rocking the shaft 36 by the link 35 intermediate of the same. Thismovement of the shaft 36 will cause its arm 39 to bear against the pin39 of the bell crank 24 on the opposite side of the instrument and causeit to rock on its pivot 24 thereby disengaging the gear 27 from theteeth 19 of the take-up roll 19, the said release movement taking placeat the time the tune sheet rewinding operation begins. As soon as theclutch 25 is opened by the rod 37 and incline 38, and the rod 24 therebyraised the spring 14 of the transfer arm will raise the latter and thesegmental bar 15 and the gear 16 and pulley 16 will turn clockwise aswell as the pulley 17 which latter is now moved as before by the belt21. The engagement between the pawl 20 and ratchet teeth 18 is such thatthe pulley 17 will carry around the take-up roll and commences itsmovement in a clockwise direction which movement of the latter occurssimultaneously with the closing of the 43 and the'consequentanti-clockthe active music-roll 10, both of the rolls 10 and 19 movingcoincidently in a reverse direction to that of their former movement,the gears 27 and 29 being disengaged. In this case also the unwindingtake-up roll is the rewinding music-roll commences to rotate on itsshaft 42, both of said movements occurring in an even and uniformmanner.

IVhile the active roll 10 is being rewound the now released ascendingtune sheet rod 11 in its rewinding movement (shown in its upper positionin Figure 4) will push upward the pin 33 of the spring controlled dog 33and cause the wedge end portion 33" of the said dog to enter between thesaid clutch members 42, 43 and to thereby separate the same. When theroll carrier 9 is advanced again the rod 11 will move away from the pin33 of the dog 33 and the latter and bar 40 will be moved to theiroriginal positions by the springs attached to the same, the music-rollrewinding operation having been completed and the pneumatic 10 thenbeing in an inoperative condition.

The shaft 29 of the roll 19 is preferably made with a crank 31 by meansof which, together with the spring 30, it will be normally held in itsoriginal position so as to ordinarily hold a hook 22 adjacent to a tunesheet rod 11 of the nearest music roll. In its upward movement thetransfer arm wise rotation of turned at the same time that raises therod 24 with it to its highest position. At the same time a projection 47of said rod at the upper part 28 of the same is raised high enough tomove the adjacent arm of a bell crank 32 upwardly whereby the other arm32 thereof Will swing downwardly on its pivot 32 and withdraw the dog 3from out of the notch 4 of the wheel 2, thereby releasing the saidlocking means on the return stroke of the transfer arm and placing thesaid wheel 2 in position to commence another operation of shiftingtheroll carrier and unwinding another music-roll, all of the parts ofthe instrument having been meanwhile restored to their originalpositions. If desired, a bell crank with long arms as 32 32 and pivotedat 32 as shown in Figure 4, may be used in place of the bell crank 32,32 illustrated in Figure 2. In the meantime, the dog 34 will have beenreturned to its normal position by its notch 34 having become alignedwith the pin 13 and thus allowing the said pin to pass therethrough andpermitting the spring 34 to carry the dog 34 backward to its originallocking position once more.

In case it is desired to stop the operation of the instrument aftertheplaying of a single music-roll, the said movement of the bell crank 32by the projection 47 may be dispensed with, in which case the lockingdog will remain entered into the notch 4 of the wheel 2 and the furtheroperation of the parts will cease, whereby, by the insertion of a coin,or otherwise, the bell crank 32, 32 may be again operated and the dog 3released (in the well known manner usual in coin controlled devices) andthe instrument thereby set in operation in order that single music-rollsmay be operated separately and, if so desired, consecutively.

It will be noted that in accordance with my invention not only do theengaging means at the free end of a tune sheet and the engaging means ofthe take-up roll advance simultaneously toward each other the drivingmeans of the take-up roll and the driving means of the music-rolloperating coincidentlybut that I also disclose means for simultaneouslydriving one mem- 1 her of each pair of rolls (comprising the take-uproll and one of the music-rolls) eonsecutively, the said engaging partsin all cases traveling synchronously with an even and uniform movementthroughout their entire operation. I thus provide automatic means forautomatically driving the roll carrier, and alsoautomatic means forsimultaneously driving the take-up roll and each of the music-rollsconsecutively, the said concurrent movement of each of the said pairs ofrolls occurring both at the winding and also at the unwinding operationsof the same.

I wish it to be understood that I do not 1 desire to be limited to theparticular use or the eXact details of construction shown and described,for obvious modifications will occur to persons skilled. in the art.

lVhat I claim ,as my invention is 1. In combination, a rotatable rollcarrier adapted to contain a plurality of musicrolls, a take-up roll,means for driving the take-up roll and each of the music-rollsconsecutively to respectively wind and unwind each of said pairs ofrolls, both members of each of said pairs of rolls being drivenconcurrently throughout their entire operation, and automatic meansforadvancing the roll carrier.

2. In a device of the class described, a music roll having a tune sheet,a roll carrier therefor, means to move the latter, a takeup roll havingengaging means, and a com mon interlocking means to directly actuate andcause the take-up engaging device and the tune sheet to simultaneouslyradually approach each other until they become operatively engagedwhereby the two said rolls will be rotated in opposite directions.

3. In combination, a rotatable roll carrier adapted to contain aplurality of musicrolls, a take-up roll, means for driving the take-uproll and each of the music-rolls consecutively to respectively wind andunwind each of said pairs of rolls, both members of each of said pairsof rolls being driven concurrently throughout their entire operation,the parts traveling with an even and uniform movement, and automaticmeans for advancing the roll carrier.

4. In a device of the class described, a music roll having a tune sheet,a roll carrier therefor, means to move the latter, a takeup roll havingengaging means, and a common interlocking means to directly actuate andcause the take-up engaging device and the tune sheet to simultaneouslygradually approach each other until they become operatively engagedwhereby the two said rolls will be rotated in opposite directions, andalso means whereby the said rolls may be simultaneously rotated with amovement contrary to their former ones, in combination with means forintermittently rotating the carrier.

'5. In combination, a rotatable roll carrier adapted to contain aplurality of musicrolls, a take-up roll, means for periodically drivingthe take-up roll and each of the music-rolls consecutively torespectively wind and unwind each of said pairs of rolls, both membersof each of said pairs of rolls being driven concurrently throughouttheir entire operation, and automatic means for intermittently advancingthe roll carrier between each of said periodic movements.

(3. In combination, a rotatable roll carrier adapted to contain aplurality of musicrolls, a take-up roll having an engaging device, meansfor periodically driving the take-up roll and each of the music-rollscarrying a tune sheet consecutively to respectively wind and unwind eachof said pairs of rolls, coacting means to cause a tune sheet and thetake-up engaging device to gradually approach each other untiloperatively engaged and both members of each of said pairs of rollsbeing driven concurrently both at the winding and unwinding of thetake-up roll, and automatic means for intermittently advancing the rollcarrier between each of said periodic movements.

7. In combination, a rotatable roll carrier adapted to contain aplurality of musicrolls, a take-up roll having an engaging device, meansfor periodically driving the take-up roll and each of the music-rollscarrying a tune sheet consecutively to respectively wind and unwind eachof said pairs of rolls, coacting means to cause a tune sheet and thetake-up engaging device to gradu ally approach each other untiloperatively engaged and both members of each of said pairs of rollsbeing driven concurrently, the parts traveling with an even and uniformn'iovement, and automatic means for intermittently advancing the rollcarrier between each of said periodic movements.

'8. In combination, a rotatable roll carrier adapted to contain aplurality of music-rolls, a take-up roll, means for periodically drivingthe take-up roll and each of the musicrolls consecutively torespectively'wind and unwind each of said pairs of rolls, both membersof each of said pairs of rolls being driven concurrently throughouttheir entire operation, and automatic means for intermittently advancingthe roll carrier between each of said periodic movements, and also meansfor locking the roll carrier'in position after each movement thereof.

9. In combination, a rotatable roll carrier adapted to contain aplurality of music-rolls having tune sheets, a take-up roll, means fordriving the takeup roll and each of the music-rolls consecutively torespectively wind and unwind each of said pairs of rolls, both membersof each of said pairs of rolls being driven concurrently throughouttheir entire operation, and automatic means for advancing the rollcarrier, and also transfer means for delivering the end of a tune sheettc the take-up roll.

10. In combination, a rotatable roll carrier adapted to contain aplurality of musicrolls havin tune sheets, a take-up roll, means fordriving the take-up roll and each of the music-rolls consecutively towind and unwind each of said pairs of rolls, both members of each ofsaid pairs of rol s being driven concurrently throughout their entireoperation, and automatic means for advancing the roll carrier, and alsotransfer respectively i means for delivering the end of a tune sheet tothe take-up roll, the parts traveling with an even and uniform movement.

11. In combination, a rotatable roll carrier adapted to contain aplurality of musicrolls having tune sheets, a take-up roll, means fordriving the take-up roll and each of the music-rolls consecutively torespectively wind and unwind each of said pairs of rolls, both membersof each of said pairs of rolls being driven concurrently throughouttheir entire operation, and automatic means for advancing the rollcarrier, and also transfer means for delivering the end of a tune sheetto the take-up roll, the said transfer means being also adapted to bemoved by the music-roll.

12. In combination, a rotatable roll carrier adapted to contain aplurality of musicrolls having tune sheets, a take-up roll, means fordriving the take-up roll and each of the music-rolls consecutively torespectively wind and unwind each of said pairs of rolls, both membersof each of said pairs of rolls being driven concurrently throughouttheir entire operation, and automatic means for advancing the rollcarrier, and also transfer means for delivering the end of a tune sheetto the take-up roll, and locking means for the roll carrier controlledby the transfer means.

13. In combination, a rotatable roll carrier adapted to containaplurality of musicrolls having tune sheets, a take-up roll, means fordriving the take-up roll and each of the music-rolls consecutively torespectively wind and unwind each of said pairs of rolls, both membersof each of said pairs of rolls being driven concurrently throughouttheir entire operation. the parts traveling with an even and uniformmovement, and automatic means for advancing the roll carrier, and alsotransfer means for delivering the end of a tune sheet to the take-uproll, the said transfer means being also adapted to be moved by themusic-roll, and locking means for the roll carrier controlled by thetransfer means.

14. In a device of the class described, a take-up roll having engagingmeans, a plurality of music-rolls with tune sheets having engaging meansat their free ends, a common carrier for the latter, means for advancingthe music-rolls consecutively so as to be in turn adjacent to thetake-up roll, and means to cause the engaging means of a tune sheet andthe engaging means of the take-up roll to travel toward each otherconcurrently until they become operatively engaged.

15. In a device of the class described, a take-up roll having engagingmeans, a plurality of music-rolls with tune sheets having engaging meansat their free ends, a common carrier for the latter, means for advancingthe music-rolls consecutively so as to be in turn adjacent to thetake-up roll, and means to cause the engaging means of a tune sheet andthe engaging means of the take-up roll to travel toward each otherconcurrently until they become operatively engaged with an even anduniform movement.

16. In a device of the class described, a take-up roll having engagingmeans, a plurality of music-rolls with tune sheets having engagingmeans, a common carrier for the latter, means for advancing themusic-rolls consecutively so as to be in turn adjacent to the take-uproll, and for driving the latter and one of the music-rollssimultaneously so that the engaging means thereof shall travel evenlytoward each other and coincidently with each other until they becomeoperatively engaged.

17. Ina device of the class described, a take-up roll having engagingmeans, a plurality of music-rolls with tune sheets having engagingmeans, a common carrier for the latter, means for advancing themusic-rolls consecutively so as to be in turn adjacent to the take-uproll, and for driving the latter and one of the music-rollssimultaneously so that the engaging means thereof shall travel towardeach other coincidently with each other, in combination with means forintermittently rotating the carrier.

18. In a device of the class described, a take-up roll, a plurality ofmusic-rolls hav ing tune sheets, a common carrier for the latter, meansfor advancing the music-rolls consecutively so that each in turn shallbe adjacent to the take-up roll, and automatic means for causing thelatter to rotate in commencing its winding movement at the same timethat the tune sheet of theadjacent music-roll is operated to cause it tocommence its unwinding movement, the two said movements coincidingwitheach other.

19. In a device of the class described, a take-up roll, a plurality ofmusic-rolls having tune sheets, a common carrier for the latter, meansfor advancing the music-rolls consecutively so that each in turn shallbe adjacent to the take-up roll, and automatic means for causing thelatter to rotate in commencing its winding movement at the same timethat the tune sheet of the adjacent music-roll is operated to cause itto commence its unwinding movement, the two said movements coincidingwith each other, in combination with means for intermittently-rotatingthe carrier.

20. In a device of the class described, a take-up roll, a plurality ofmusic-rolls having tune sheets, a common carrier for the latter, meansfor advancing the music-rolls consecutively so as to be in turn adjacentto the take-up roll, the latter and the adjacent tune sheet havingengaging means, and a common means to cause the engaging means of thetake-up roll and the engaging means of the tune sheet to simultaneouslyapproach each other.

21. In a device of the class described, a take-up roll, a plurality ofmusic-rolls having tune sheets, a common carrier for the latter, meansfor advancing the music-rolls consecutively so as to be in turn adjacentto the take-up roll, the latter and the adjacent tune sheet havingengaging means, and a common means to cause the engaging means of thetake-up roll and the engaging means of the tune sheet to simultaneouslyapproach each other with an even and uniform movement.

22. In a device of the class described, a take-up roll, a plurality ofmusic-rolls having tune sheets, a common carrier for the latter, meansfor advancing the music-rolls consecutively so as to be in turn adjacentto the take-up roll, the latter and the adjacent tune sheet havingengaging means, and automatic means to cause the engaging means of thetake-up roll and the engaging means of the tune sheet to simultaneouslyapproach each other with an even and uniform movement.

23. In a device of the class described, a take-up roll, a plurality ofmusic-rolls having tune sheets, a common carrier for the latter, meansfor advancing the music-rolls consecutively so as to be in turn adjacentto the take-up roll, the latter and the adjacent tune sheet havingengaging means, and means to cause the engaging means of the take-uproll and the engaging means of the tune sheet to simultaneously approacheach other, and also additional means for continuing the movement of thesaid engaging means.

24. In a device of the class described, a take-up roll, a plurality ofmusic-rolls having tune sheets, a common carrier for the latter, meansfor advancing the music-rolls consecutively so as to be in turn adjacentto the take-up roll, the latter and the adjacent tune sheet havingengaging means, and means to cause the engaging means of the take-uproll. and the engaging means of the tune sheet to simultaneouslyapproach each other, and also additional means for continuing themovement of the said engaging means, and means for intermittentlyrotating the carrier and for locking the parts in position.

25. In a device of the class described, a take-up roll, a plurality ofmusic-rolls having tune sheets, a common carrier for the latter, meansfor advancing the music-rolls consecutively so as to be in turn adjacentto the take-up roll, automatic means for causing the latter to rotate atthe same time the tune sheet of the adjacent music-roll commences itsunwinding movement, and automatic means comprising transfer arms fordelivering the end of the tune sheet to the take-up roll.

26. In a device of the class described, a

take-up roll, a plurality of music-rolls having time sheet-s, a commoncarrier for the latter, means for advancing the music-rollsconsecutively so as to to be in turn adjacent to the take-up roll,automatic means for causing the latter to rotate at the same time thetune sheet of the adjacent music-roll commences its unwinding movement,transfer arms for delivering the end of the tune sheet to the take-uproll, and locking means for the parts, the said transfer meanscontrolling said locking means.

27. In a device of the class described, a take-up roll, a plurality ofmusic rolls having tune sheets, a common carrier for the latter, meansfor advancing the music-rolls consecutively so as to to be in turnadjacent to the take-up roll, automatic means for causing the latter torotate at the same time the tune sheet of the adjacent music-rollcommences its winding movement, the said Winding movement means beingcontrolled by the tune sheet, transfer means for delivering the end of atune sheet to the take up roll, means for holding the latter out ofengagement with its actuating means and the tune sheet of a music-roll,said transfer means controlling the holding means.

28. In a device of'the class described, a talre-up roll, a plurality ofmusic-rolls having tune sheets, a common carrier for the latter, meansfor advancing the music-rolls consecutively so as to be adjacent to thetakeup roll, automatic means for causing the latter to rotate at thetime the tune sheet of the adjacent music-roll commences its unwindingmovement, transfer means for delivering the end of a tune sheet tothetake-up roll, and means for holding the take-up roll out of engagementwith its actuating means and the tune sheet of a music-roll, saidtransfer means controlling the holding means.

29. In a device of the class'described, a takeup roll, a plurality ofmusic-rolls having tune sheets, a common carrier for the latter, meansfor advancing the music-rolls consecutively so as to be adjacent to thetake-up roll, automatic means for causing the latter to rotate at thetime'the; tune sheet of the adjacent music-roll commences its unwindingmovement, transfer means for delivering the end of the tune sheet to thetake-up roll, means for holding the takeup roll out of engagement withits actuating means and the tune sheet of a music-roll, and lockingmeans for the parts, said transfer means controlling both the lockingmeans and the holding means.

30. In a device of the class described, a tune-sheet-roll, a take-uproll having an engaging device, means to automatically cause the latterand a tune sheet to approach each other evenly and gradually until theybecome operatively engaged and move the two rolls simultaneously inpredetermined directions, means to automatically stop the rotation ofthe two rolls simultaneously at the end of their concurrent movements,means to automatically move the two rolls simultaneously in directionscontrary to their former movements, and means to automatically stop therotation of the two rolls simultaneously at the end of their last namedconcurrent movements.

Signed at New York, in the county of New York and State of New York,this 11th day of March A. D. 1921.

JONATHAN O. FOWLER.

